VPN1-06. Functional Description HA /2008. Pilot Operated Pressure Relief Valves. Replaces HA /2002

Transcription

1 Pilot Operated Pressure Relief Valves VPN-06 HA 56 4/2008 Size 06 p max up to 320 bar Q max up to 70 L/min Replaces HA 56 3/2002 Cartridge, modular and in-line design Five pressure ranges Two pressure adjustment options: - screw with internal hexagon - hand knob with arrestment Functional Description Pressure relief valves VPN are pilot operated pressure valves designed for system pressure limitation. The pressure adjustment provides the adjustment screw (4). In its basic state, the valve is closed. The pressure acts on the face area of the control spool () and at the same time through orifice (2) on the control spool rear side, which is preloaded by a spring and further on through orifice (3) on the pilot valve ball (6). When the increasing system pressure reaches the value, which is preset by spring (5), the valve opens and the control flow passes through the pilot valves. The spool area which is preloaded by the spring becomes relieved, the spool control edge opens the radial bores in bushing (7) and the fluid passes from port P to T. The control flow is routed through groove (8) to channel T. Valve adjustment can be lockwired (9). The valve body and the adjustment screw are zinc coated. With models M and R the valve bodies are phosphate coated. P T

2 HA 56 Ordering Code VPN-06/ - Pilot Operated Pressure Relief Valve Nominal size without designation V Sealing NBR FPM (Viton) Model screw in cartridge modular valve, flow from A to T modular valve, flow from B to T modular valve, flow from P to T modular valve, flow from A to B and B to A modular valve, flow from A and B to T in-line valve, thread G3/8 in-line valve, thread G/2 in-line valve, thread G3/8 in-line valve, thread G/2 S MA MB MP MC MD RA RA2 RB RB2 S R Adjustment element screw with internal hexagon hand knob Pressure range 6 up to 63 bar 0 up to 00 bar 6 up to 60 bar 2 up to 20 bar 32 up to 320 bar Functional Symbols FOR PREFERRED TYPES SEE BOLD TYPING IN ORDERING CODE AND TABLE OF PREFERRED TYPES ON PAGE 0 Model MA Model MB Model MP Model MC Model MD Valve side Subplate side Model RA Model RB Ordering Numbers of Sandwich / Valve Bodies (without screw-in cartridge) Valve body for modular valve - NBR Ordering number Valve body for modular valve - Viton Ordering number MA06-VP MA06-VP/V MB06-VP MB06-VP/V MP06-VP MP06-VP/V MC06-VP MC06-VP/V MD06-VP MD06-VP/V Valve body for in-line valve - NBR Ordering number Valve body for in-line valve - Viton Ordering number RA-06-VP RA3-06-VP/V RA2-06-VP RA4-06-VP/V RB-06-VP RB3-06-VP/V RB2-06-VP RB4-06-VP/V

3 Technical Data HA 56 Nominal size mm 06 Max. flow rate L/min 70 Max. control flow L/min 0.35 Max. service pressure ports ( P, T, A, B ) bar 350 Working pressure related to flow bar see p-q characteristics Hydraulic fluid Hydraulic oils of power classes (HL, HLP) to DIN 5524 Fluid temperature range for standard sealing (NBR) Fluid temperature range for Viton sealing (FPM) C C Viscosity range mm 2 /s Max. degree of fluid contamination Class 2/8/5 according to ISO 4406 Weight kg 0.25 Weight - models MA, MB, MP - models MC, MD - models RA, RA2, RB, RB2 Mounting position kg unrestricted p-q Characteristics for Model S Measured at = 32 mm 2 /s pressure range 32 Pressure p [bar] pressure range 2 pressure range 6 pressure range 0 pressure range 6 Flow Q [L/min] p-q Characteristics Measured at = 32 mm 2 /s Pressure drop p related to flow rate. MC p, p Emin [bar] MA, MB, MP, MD S Flow Q [L/min] 3

4 HA 56 Valve Dimensions Dimensions in millimetres Model S Cavity Type designation Adjustment element (screw with internal HEX 6) 2 Adjustment element R (hand knob) With all adjustment elements: - clockwise rotation - pressure increase - anticlockwise rotation - pressure decrease 3 Locknut HEX 27 4 Wrench flats (s=24 mm) - tightening torque 30 Nm 5 O-ring 9.4 x 2. NBR 80 ( pc.) supplied with valve 6 Combined sealing: O-ring 4 x.78 NBR 90 ( pc.) Back-up ring BBP80B05-N x 7.43 x.4 (2 pcs.) supplied with valve 4

5 Valve Dimensions Dimensions in millimetres HA 56 Model MA Required surfacefinish of interface Name plate 2 Adjustment element for pressure setting 3 4 through mounting holes 4 Square rings 9.25 x.68 (4 pcs.) supplied with valve 5

6 HA 56 Valve Dimensions Dimensions in millimetres Models MB and MP Required surfacefinish of interface Name plate 2 Adjustment element for pressure setting 3 4 through mounting holes 4 Square rings 9.25 x.68 (4 pcs.) supplied with valve 6

7 Valve Dimensions Models MC and MD Dimensions in milimetres HA 56 Required surfacefinish of interface Name plate 2 Adjustment element for pressure setting 3 4 through mounting holes 4 Square rings 9.25 x.68 (4 pcs.) supplied with valve Caution! The packing foil is recyclable. The protecting plate can be returned to the manufacturer. Mounting studs must be ordered separately. Tightening torque is 8.9 Nm. The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should not be construed in any case as a guaranteed representation of the product properties in the sense of the law 7

8 HA 56 Valve Dimensions Dimensions in millimetres Model RA 2 Name plate 2 2 through mounting holes Model RA2 2 8

9 Valve Dimensions Dimensions in milimetres HA 56 Model RB 2 Name plate 2 2 through mounting holes Model RB2 2 9

10 HA 56 Spare Parts Set of the seals for modular valve Set of the seals for screw-in cartridge Model Dimensions, number Ordering number Screw-in cartridge - NBR O-ring 4 x.78 NBR 90 ( pc.) O-ring 7 x.8 NBR 70 ( pc.) O-ring 9.4 x 2. NBR 80 ( pc.) O-ring 9.25 x.78 NBR 90 ( pc.) Back-up ring BBP80B05-N x 7.43 x.4 (2 pc.) Back-up ring BBP80B06-N x 9.03 x.4 ( pc.) O-ring 4 x.78 ( pc.) O-ring 7 x.8 ( pc.) Screw-in cartridge - Viton O-ring 9.4 x 2. ( pc.) O-ring 9.25 x.78 ( pc.) Back-up ring BBP80B x 7.43 x.4 (2 pc.) Back-up ring BBP80B x 9.03 x.4 ( pc.) Model Dimensions, number Ordering number Modular valve - NBR Square-Ring 9.25 x.68 (4 pcs.) Modular valve - Viton O-ring 9.25 x.78 (4 pcs.) Model Typ, number Ordering number In-line valve RA - NBR In-line valve RA2 - NBR In-line valve RB - NBR In-line valve RB2 - NBR In-line valve RA - Viton In-line valve RA2 - Viton In-line valve RB - Viton In-line valve RB2 - Viton Preferred Types of Valves VSTI R/4-ED ( pc.) VSTI R3/8-ED ( pc.) VSTI R/4-ED ( pc.) VSTI R/2-ED ( pc.) VSTI R/4-ED ( pc.) VSTI R/4-ED - Viton ( pc.) VSTI R3/8-ED - Viton ( pc.) VSTI R/4-ED - Viton ( pc.) VSTI R/2-ED - Viton ( pc.) VSTI R/4-ED - Viton ( pc.) Type Ordering number Type Ordering number VPN-06/S-0S VPN-06/MP-32S VPN-06/S-2S VPN-06/RA2-0S VPN-06/S-32S VPN-06/RA2-2S VPN-06/MP-0S VPN-06/RA2-32S VPN-06/MP-2S ARGO-HYTOS s.r.o. CZ Vrchlabí Tel.: , Fax: sales.cz@argo-hytos.com Subject to alteration without notice!